Floor supporting means



Nov. 10, 1936. V. Di GIACOMO FLOOR SUPPORTING MEANS Original Filed Feb.17, 1931 v INVENTOR' l INCENT .D/ G/Aco/wo I Patented Nov. 10, 1936UNITED STATES PATENT OFFICE Refiled for abandoned application Serial No.516,312, February 17, 1931. This application January 27, 1936, SerialNo. 61,046

1 Claim.

This application is a substitute for application 516,312, filed Feb. 17,1931.

This invention relates to building construction and in particular to amethod of supporting con- 5 crete flooring while the same is settingwithout the necessity of using shoring or other supporting equipmentfrom beneath.

In building construction, concrete floors take from fifteen to thirtydays to set and it has been necessary to support the flooring by propswhich sustain the floors while setting, these props are under the loadto be supported and during the process of setting of the fioors fromfive to ten floors therefore, would have to be supported each from thefloor beneath with the result that the bottom fioor top and bottomflooring had to sustain the concentrated load of all of the upperflooring concrete in addition to the underpinning necessary on eachfloor.

This method of supporting the flooring is highly objectionableparticularly in View of presentday building operations in which highinterest charges make it absolutely essential that the building beerected in the shortest possible time. With the shoring or underpinningin place on each floor, the finishing of the flooring could not beaccomplished until the concretehad set and the shoring been removed.

One of the particular objects of my invention is to provide for thepouring of concrete floors and the supporting of the same without thenecessity of using shoring or underpinning with the result that a finishcan be put on the concrete flooring as soon as the upper surface thereofhas hardened with the result that much time is saved and in addition,the supporting of the flooring is carried on by the structural'steelwork of the building and not from the flooring below as has beennecessary heretofore.

A still further object of my invention is to provide a device for thesupport of the flooring during setting and also to provide means wherebythe proper camber can be given the under surface of the flooring as isessential in building operation 45 .and consequently well known.

My invention also contemplates the proper suspension from the permanentsteel structure of the floor above of the concrete floor during itssetting at spaced points so that the flooring may be finished withoutdelay and, if desired, the wooden form employed in the pouring of theconcrete may be removed after the same has become partially set so thatthe pouring of the concrete flooring may be carried out with a minimumof boards and timbers.

Changes and variations may be made in the construction shown anddescribed without departing from the principles of the invention orsacrificing its chief advantages; hence such invention is not to beconfined to the structures shown in the accompanying drawing:

Figure 1 is a view in elevation of a part of a building construction,the flooring being shown the structural steel beams of a flooringabovethe one to be supported and from which hangs the supporting means.

In building operations, it is usual to build around and. between theI-beams 6 defining a fioor of the building, a wooden form construction'1, the form being supported fro-m the I-beams through hanging wire 8 orother media. When the form 1 is in place, the concrete 9 is poured v toform the flooring and preparatory to pouring, the form I is suitablysupported from beneath by shoring or underpinning so that the flooring,

while setting, will not sag but will be maintained in proper shape forthe period of time taken for the floor to completely set. After thefioor has set, the finish Ill of any character is applied to the uppersurface thereof and the floor is thus completed. In the use of shoringor underpinm'n however, as before mentioned, this finish coat Ii]cannotbe applied until the underpinning is removed, with the result thatthe building operation is materially delayed and the cost of erectingthe building thereby increased.

My invention contemplates the use of a means for suspending the loadfrom the upper beam 5 and contemplates the use of the hook I l orholding members which are arranged to engage the flanges of the beams 5to suspend between said hooks l l the supporting cable l2 which is ofsteel and strong enough to support the load that will be placed upon it.The ends of the cable l2 are passed through suitable eyes l3 in thehooks II and secured through the medium of clamps l4, so that ifnecessary, the ends of the cable l2 in the clamp I4 may be adjusted toshorten or lengthen the hang thereof. The cable l2 passes through an eyeI5 in the upper end of a bar [6 forming one end of a turn buckleconstruction IT. The lower end of the bar [6 is threaded with aleft-hand thread l8 through the medium of which it is adjustablyconnected with one end of the turn buckle H, the opposite end of theturn buckle being threaded to receive the right-hand threaded end IQ ofa depending bar 20. In employing my invention, before the flooring 9 ispoured, the form 1 has been erected and in order to support it, use ismade of a plate 2| carried by the bar 20 and arranged to be held upagainst the form planking 7 through the medium of the nut 22 which isthreaded on the bar 20. This plate 2| gives to the form planking I, adirect support at spaced points wherever the supporting member isemployed but in order to support the form throughout its length andbreadth, use is made of the longitudinal timbers 23 and cross timbers24, the latter being supported on the longitudinal timbers 23 which inturn are supported on the plate 25, this plate being secured in positionby the nut 26 which is threaded over the end of the bar 20.

It is to be understood that as many of the supporting units may beemployed as is deemed necessary and the timbers 24 and 23 will besupported at properly spaced points depending upon the load they are tocarry. A suitable strip or block 2'! may be employed on the form at theends of the timbers 24 to prevent their displacement and it will benoted that the crosswise timbers 24 engage and support at spaced points,the planking I of the form in which the flooring concrete is pouredwhile the timbers or joists 24 are supported through the medium of thelongitudinal member 23. It is evident, therefore, that adjustment of theturn buckle I! will draw up on the rod 20 and the proper camber will begiven the flooring and it will be effectively supported during itssetting. After the floor has partially set, the nut 22 may be loosenedas well as the nut 26 so that the joists 23 and 24 may be loweredslightly to release the form planking I which may be drawn out and usedin one of the upper floors that are to be poured, it being understood,of

course, that the nuts 22 and 26 would again be tightened to draw up andtake up the load as before but the concrete flooring would havesufficiently set so that its reinforcing rods, which are usuallyimbedded therein, would sustain the load during the removal of theplanking 1 without any danger of collapse.

When the floor 9 also has partially set, it is quite evident that itsupper surface can be finished off as at If! without removing thesupporting construction and after the floor has completely set, the turnbuckle cable 12 and its associated parts may be removed for use atanother point in the building and the opening left by the rod 20 can bereadily closed up without hindering the progress of the work offinishing the floors of the building. When the flooring about the beams55 is to be poured, a suitable space, of course, would be left in theform 1 for the hooks ll so that the same could be removed after thefloor 9 had set, after which the upper flooring would be completed inthat portion formerly occupied by the hooks l I.

It is evident, therefore, that with my invention, each floor load isseparately sustained by suspension from the steel beams immediatelyoverhead or forming the floor above so that instead of getting aconcentrated load on the shoring or prop on the lowermost floor, thereis a spreading of the load so that the weight of each floor isseparately maintained and properly distributed throughout the building.

Another advantage of my invention is the fact that greater expeditionand dispatch is possible in the performance of a concreting job in thatwhere it was formerly necessary to remove all of the shoring andunderpinning in order to put the finish on the concrete floor, it is nowpossible to immediately apply the finish.

Another advantage is that the use of the turn buckle takes up the slackin the cable which is suspended from the permanent steel structure onthe floor above thus creating a perfect suspension or maintenance of theconcrete floor load on the floor below and ensuring the continuance ofsuch perfect suspension and maintenance of the load during the entirefloor setting process.

Another advantage is that the great amount of shoring and underpinningheretofore necessary to support the door form is practically obviatedand my invention may be used over and over again and adapted todifierent conditions without the necessity of altering the form thereof.

My invention is not to be restricted to the precise details ofconstruction shown since various changes and modifications may be madetherein Without departing from the scope of the invention or sacrificingthe advantages derived from its use.

What I claim is:-

A floor supporting device of the character described comprising a turnbuckle, hooks and a cable permitting suspension of the turn buckle froman overhead structure, a bar forming a part of the turn buckle andarranged to pass through the floor form of a floor to be supported, aplate arranged to be adjustably positioned on the bar and adapted toengage the under side of the floor form, said turn buckle beingadjustable to draw said member against said form, a second supportingplate carried by said bar, and a plurality of form engaging elementssupported on said second member.

VINCENT DI GIACOMO.

